• 1. ectoderm: 外胚层 | 外胚叶 | 外细胞层
• 2. extraembryonic ectoderm: 胚外外胚层
• 3. primitive ectoderm: 原始外胚层 | 原始外胚叶

更多释义

• 1.Ectoderm follows a default pathway.
  外胚层遵循一个默认的路径。
  dict.yoduao.com
• 2.The little tadpole, about the size of a sesame seed, is now made up of three layers: the ectoderm, mesoderm and endoderm.
  芝麻籽大小的小蝌蚪现在已经分成了三层：外胚层、中胚层和内胚层。
  dict.yoduao.com
• 3.The little tadpole about the size of a sesame seed is now made up of three layers: the ectoderm mesoderm and endoderm.
  芝麻籽大小的小蝌蚪现在已经分成了三层：外胚层、中胚层和内胚层。
  dict.yoduao.com

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